Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: WASKDCFNPS0

<< 1 2 3 4 5 6 7 8 9 10 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-290 3 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-290 9 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-292 7 Washington Zone 11 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-07-29   
240-293 1 Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2002-07-08   
240-294 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-294 0 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 0 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 1 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 2 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 3 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-306 9 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-316 3 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2009-07-31   
240-317 6 Lexington Park-Great Mills MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-02-19   
240-342 5 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2008-10-01   
240-349 3 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-383 1 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-07-22   
240-383 3 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-07-22   
240-387 6 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-02-22   
240-387 7 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-02-22   
240-399 A Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-402 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-402 0 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 1 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 2 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 3 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 4 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 5 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 6 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 7 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 8 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-402 9 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-11-13   
240-404 A Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 0 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-404 6 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 7 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-404 9 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-408 7 Washington Zone 10 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-03-15   
240-427 A Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-427 3 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-05-11   
240-427 4 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-05-11   
240-427 9 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-437 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-437 0 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-437 5 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-448 2 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2014-11-17   
240-454 8 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-12   
240-454 9 Gaithersburg MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-08-12   
240-459 6 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2011-04-01   
240-489 A Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-489 0 Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-489 4 Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-489 5 Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-489 8 Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-489 9 Poolesville MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-510 A Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-510 0 Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-510 1 Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-03-26   
240-510 2 Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-03-26   
240-510 9 Washington Zone 15 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-516 7 Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-04-05   
240-518 6 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-02-21   
240-523 A La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 0 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 5 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-523 7 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-523 8 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-08-15   
240-523 9 La Plata MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-538 A Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-538 0 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-538 9 Leonardtown MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-541 4 Washington Zone 2 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2012-10-16   
240-548 1 Washington Zone 14 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-553 A Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-553 0 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-553 1 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-553 9 Washington Zone 13 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 A Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 0 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 1 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 2 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 3 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 4 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 8 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-554 9 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 A Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 0 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 1 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 2 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 3 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-559 9 Ashton MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-560 A Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-560 0 Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-560 9 Washington Zone 12 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-582 3 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-04-29   
240-582 8 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-03-26   
240-582 9 Washington Zone 4 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-03-26   
240-583 2 Laurel MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2010-06-12   
240-595 6 Washington Zone 3 MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2007-02-19   
240-607 6 Waldorf MD 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2005-05-23   

<< 1 2 3 4 5 6 7 8 9 10 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.